Prepare for the worst, scope for the pest

China is a country that is in most jeopardy from invasive alien species-ones that are introduced, accidentally or intentionally, outside of their natural geographic range and which become problematic.

Over half of those listed among the 100 of the world's worst invasive alien species, as published by the International Union for Conservation of Nature, have invaded China.

Each year, more than 600 invasive alien species identified have cost around 200 billion yuan ($30.17 billion) in economic losses, according to Chinese Academy of Agricultural Sciences vice-president, Wu Kongming.

They also threaten ecological safety by weakening biodiversity and the health of human beings and animals. With its rich biodiversity, China is especially vulnerable to invasive alien species.